Umm, i really enjoy this and want to compete.. I've just started to beat level 20 regularly so i want to know how to improve my score. What factors make the scores grow? I know the size of the grid when its flashing silver matters (sorry if i'm not using the right terminology) and bigger = more points, and i even managed to nail two squares/rectangles once which was a huge size. Also i presume exploding them when the aliens are there gives you a better score? Could someone go into some detail about the scoring etc? Are there mulitpliers and stuff?